diff --git a/libc/private/bionic_lock.h b/libc/private/bionic_lock.h
index 6a0fd06..a36d1ed 100644
--- a/libc/private/bionic_lock.h
+++ b/libc/private/bionic_lock.h
@@ -31,6 +31,8 @@
 #include <stdatomic.h>
 #include "private/bionic_futex.h"
 
+// Lock is used in places like pthread_rwlock_t, which can be initialized without calling
+// an initialization function. So make sure Lock can be initialized by setting its memory to 0.
 class Lock {
  private:
   enum LockState {
@@ -42,10 +44,6 @@
   bool process_shared;
 
  public:
-  Lock(bool process_shared = false) {
-    init(process_shared);
-  }
-
   void init(bool process_shared) {
     atomic_init(&state, Unlocked);
     this->process_shared = process_shared;